Here's that tut. As you can see, I didnt follow the tutorial very well For the first part, I just did some black and white gradients, all on new layers set to difference. Avoid using the radial gradient, doesnt work too well. Flattened and flipped a few times too. Then I did waves plugin on new layer set to lighten, and I used dents once I think. Once I was done I coloured it.

Here's that tut. As you can see, I didnt follow the tutorial very well For the first part, I just did some black and white gradients, all on new layers set to difference. Avoid using the radial gradient, doesnt work too well. Flattened and flipped a few times too. Then I did waves plugin on new layer set to lighten, and I used dents once I think. Once I was done I coloured it.

looks pretty awesome,nice work.Something tells me that if you tweaked the opacity and had multiple layers of it and used some blurs,you could make smoke out of the same idea your using there.May be something you wanna try out and see if you can do it.